Manufacture of cartridge-shells from paper-pulp



' Patented Apr. 29, 1884.

G. M. PETERS. MANUFACTURE OF CARTRIDGE SHELLS PROM PAPER PULP:310.297,?12.

(No Model.)

WITNESSES:

a in the county of Greene and State of Ohio, have r of the properconsistency, is delivered in any follows: The pulp is poured into theopening UNITED fS 'rns o) MOORE rErEus,

or XENIA, orno.

MANUFACTUREOF CARTRIDGE-SHELLS FROM PAPER- PULP.

SPECIFICATION forming part of Letters Patent No. 297,712, dated April29,1884.

' Application filed March 20, 1884. (No model.)

To all whom it may concern.-

Be itknown that I, G. MOORE PETERS, a citizen of the United States,residing at Xenia,

invented certain new and useful Improvements in the Manufacture ofCartridge-Shells from Paper-Pulp, of which the following is aspecification, reference being had therein to' the accompanyingdrawings.

My inventionrelates to the manufacture of cartridge-shells frompaper-pulp.

Heretofore paper cartridge-shells have been made witha met-albase, towhich the sides of the shell are secured. This necessitates extra laborand expense in fitting the shell-case to the base. I now propose to makeshells of one piece, base and sides complete and integral, at oneoperation. This'l accomplish as follows, reference being had to theaccompanying drawings, in which- Figure 1 is a section of the mold forforming the shell; Fig. 2, a vertical section of the completed shell,and Fig. 3 a detail view of the primer that I propose to use with theshell.

For the purpose required I use paper-pulp made in the ordinary way, orwith a sizing such as used with papier-inach. This pulp,

suitable way into the mold A, having .the depending sides A, forming atube, the sides B, and base 0. Between the sides B and tube A an openingis left, which tapers upward slightly, to aid the withdrawal of theshell, andis enlarged eircumferentially and vertically to form the baseof the shell. The base 0 has a central shouldered projection, c, to formthe seat for the primer, and a conical projecting point, e, to form theopening in the base for the flash to reach the powder.

The method of constructing the shellis as D of the tube A. The rammer orpiston (which closely fits opening D) is forced into the tube by apower-press, or in any other suita-. ble way, and the pulp forced upwardinto the opening just described, which forms the body of the shell. Thepulp, being forced downward and upward; forms the sides andthe base ofthe shell. The molds are heated before the pulp is poured in, and therammer allowed cause it to shrink sufliciently to be withdrawn from themolds, this being assisted, also, by the slight taper of the tube beforereferred to. The tube A is not only tapered, but is rounded at thebottom, as shown in Fig. 1. It may, however, be necessary, previous tothe insertion of the pulp, to lubricate the mold with paraffine or otheroily substance, toprevent the pulp from sticking. This may also servethe purpose of oiling the surface of the shell, and

thus afford protection against the moisture of the atmosphere. It isevident that hundreds of these molds may be arranged on one set ofplates, and all be filled and pressed at one time. The sides A of thetube and the sides B of the mold are of suitable metals or othermaterial, care being had as to their relative expansion. The point orprojection e may be formed on the end of the rammer E, instead of thebase 0, and an opening thus formed.

The cap or primer shown in Fig. 3 consists in an anvil, N, having acentral-fire opening, formed by puncturing the top, and forming theprojections n, opening inward. The outer shell or cap, 0, containing thefulminate, is compressedagainst the sides and over the anvil. The anvilis provided with a flange, 12, forming a base therefor, which base isforced into the seat 9 of the shell with a tubular implement coveringthe primer, or in any suitable way.

What I claim is- 1. The process of making'eartridge-shells frompaper-pulp, which consists in pouring said pulp into a mold enlargedvertically and circumferentially at the bottom toform the base of theshell, and having an internal tube slightly tapered on its outer surfaceand rounded at the bottom, and a piston for forcing the pulp into themold, whereby the body of --the shell is formed in said mold,substantially as and for the purpose set forth.

2. A mold for making cartridge-shells from thickened base and a flangeand a seat for the 10 paper-pulp, consisting of theinternal cylinder,primer, substantially as set forth. 1 and sideshaving a tapered openingbetween In testimony whereof I affix my signature in 7 them, and a EasepI'OViCIGd Wig] means f0! presence of two witne'sses,' I 4 ormin a seator'the rimer, an an o enin 5 throng% the baseinto t e charge, substatiall; MOORE as set forth. Witnesses;

3. A cartridge-shell made of paper-pulp 1 EMMA M, GILLETT, compressed ormolded, and provided with a J. G. KRoHR.

